EP0295368B1 - Dispositif de contrôle à commande manuelle - Google Patents

Dispositif de contrôle à commande manuelle Download PDF

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Publication number
EP0295368B1
EP0295368B1 EP88104342A EP88104342A EP0295368B1 EP 0295368 B1 EP0295368 B1 EP 0295368B1 EP 88104342 A EP88104342 A EP 88104342A EP 88104342 A EP88104342 A EP 88104342A EP 0295368 B1 EP0295368 B1 EP 0295368B1
Authority
EP
European Patent Office
Prior art keywords
light
handle
detectors
detector
source
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP88104342A
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German (de)
English (en)
Other versions
EP0295368A3 (en
EP0295368A2 (fr
Inventor
Michael John Garrett
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Publication of EP0295368A2 publication Critical patent/EP0295368A2/fr
Publication of EP0295368A3 publication Critical patent/EP0295368A3/en
Application granted granted Critical
Publication of EP0295368B1 publication Critical patent/EP0295368B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G9/00—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously
    • G05G9/02—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only
    • G05G9/04—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously
    • G05G9/047—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously the controlling member being movable by hand about orthogonal axes, e.g. joysticks
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G9/00—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously
    • G05G9/02—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only
    • G05G9/04—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously
    • G05G9/047—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously the controlling member being movable by hand about orthogonal axes, e.g. joysticks
    • G05G2009/04703—Mounting of controlling member
    • G05G2009/04714—Mounting of controlling member with orthogonal axes
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G9/00—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously
    • G05G9/02—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only
    • G05G9/04—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously
    • G05G9/047—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously the controlling member being movable by hand about orthogonal axes, e.g. joysticks
    • G05G2009/0474—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously the controlling member being movable by hand about orthogonal axes, e.g. joysticks characterised by means converting mechanical movement into electric signals
    • G05G2009/04759—Light-sensitive detector, e.g. photoelectric

Definitions

  • This invention relates to a manually-operated control device which may be employed for inputting control information to a data processing apparatus. It is useful, for example, in controlling the position of a cursor on a display screen.
  • the prior art shows many examples of mechanical devices such as joysticks, mice etc which are either intended to be or could be adapted to be used to control a cursor position on a display screen.
  • a further pair of contacts disposed beneath the handle and arranged to be closed when a rod passed down the handle is depressed against the action of a spring. This action may be interpreted as a 'fire' signal in a video game or, more generally, as acceptance of the position of a cursor on a display screen.
  • the outputs from the detectors vary continuously with varying position of the handle, rather than being simply on/off, so the joystick detects the extent to which the handle is moved away from its neutral position as well as the direction in which it is moved.
  • the advantage of optical joystick such as this is that they are not subject to degradation with use to the same extent as joysticks using potentiometers.
  • IBM Technical Disclosure Bulletin, vol. 27, No 8, January 1985, entitled "Optoelectronic Joystick Controller” discloses a manually-operated joystick which uses photoresistors, a light source and a movable sphere as a shutter element.
  • the sphere has a lower hemispherical portion which is transparent. Movement of the joystick causes the attached sphere to move accordingly and thus causes varying amounts of light to impinge on the photoresistors.
  • the instantaneous impedances of the photoresistors are measured to provide input signals indicative of the joystick position.
  • WO-A-8,204,151 discloses an electro-optical mouse which communicates optical energy to and from a pattern of passive, position-related lines on a surface.
  • the mouse incorporates a light source and a four-quadrant detector which responds to light from the light source. As the mouse is moved on the surface the intensity of light falling on the various detectors varies, from which the position of the mouse relative to the lines can be ascertained.
  • Prior art joysticks have therefore either employed electromechanical sensors, such as mechanical switches or potentiometers, and have consequently been subject to wear, or they have employed optical sensing techniques requiring the use of a shutter. Further, the joysticks employing optical techniques have tended to occupy greater depth than is desirable.
  • the present invention provides a manually-operated control device for controlling the position of a cursor on a display screen comprising: a source of light; a plurality of detectors responsive to light from the source; and a manually-movable handle operable to vary the relative intensities of light falling on the detectors, the handle having a neutral position and a plurality of operative positions, characterised in that: said handle has an emission window therein and includes transmission means for transmitting the light from the source to the window; the transmission means is formed in the shape of a mushroom, arranged to receive light from the source into a spigot forming the stem of the mushroom and to internally reflect the light within the transmission means such that the light emanates through said emission window; whereby movement of the handle alters the position of the window relative to the detectors, so that the position of the handle may be measured by interrogation of the detectors.
  • the transmission means includes a surface arranged to reflect light within the transmission means during transmission.
  • the plurality of detectors comprises four detectors, each detector being mounted in a support member at a different corner of a notional square.
  • This provides the facility for moving a cursor on a screen in the four directions up, down, left and right.
  • the handle is translatably mounted in the support member such that the handle may be translatably moved within a predetermined region which is sufficiently extensive to permit each detector to be illuminated and, further, which is sufficiently extensive to permit two adjacent detectors to be illuminated simultaneously.
  • each detector has associated with it a further detector such that, when the handle is moved along an axis from the neutral position to an operative position, further motion of the handle along the same axis causes light to be transmitted to the associated further detector.
  • This provides two levels of control in each of the four major directions: up, down, left and right. These may be interpreted, for example, by an attached data processing apparatus as slow and fast respectively or single-step and continuous movement respectively.
  • the handle has to move further from the neutral position when it moves to these 45 degree positions than when it moves in the major directions.
  • the device further comprises switch means, responsive to manual pressure exerted on the handle in a direction perpendicular to the plane of said notional square.
  • the switch means is responsive to downward pressure exerted on any part of the handle; it is not necessary for the operator to find and press a 'fire' button attached to the handle, as in the prior art. It is a further advantage of this invention that the switch means is opto-electronic and therefore has fewer moving parts liable to wear out.
  • the top plate 10 of a keyboard has a large hole 11, four smaller holes 12 and a further four small holes 12a, grouped in depressions 13 around the hole 11 as shown in Fig. 2.
  • a spigot 15 of a handle 14 Arranged to pass through hole 11 is a spigot 15 of a handle 14.
  • This handle also includes a circular cap 16 and a finger grip 17, although if desired any convenient shape other than that shown could be used.
  • This handle is formed of an infra-red light transparent plastics material such as polycarbonate or an acrylic resin. Ideally, the material and design of this handle are such that the handle may be fabricated by injection moulding.
  • filters 18 are provided which are bonded in place in the depressions 13. These filters permit the transmission of infra-red light whilst absorbing and/or reflecting most of any visible or ultra-violet light incident on them.
  • filter materials which would be suitable for this application.
  • One example is RG695, supplied by Schott, which absorbs 100% of incident light at 650 nm wavelength and 50% at 695 nm.
  • the remaining components of the device are situated beneath the top plate 10. These include a mechanism for centring the handle 14 in hole 11.
  • This mechanism consists of four coil springs 20, each attached at one end to a support 21 which is in turn attached to the underside of top plate 10.
  • the other end of each spring 20 is attached to a handle retaining ring 22; when assembled, spigot 15 passes through the large hole in ring 22 and is retained by latch 23 (see Fig. 3).
  • the springs 20 are all similar in their mechanical characteristics and each is in tension in the arrangement shown, so that their combined action is to provide forces tending to centre the handle 14 in the hole 11.
  • a further coil spring 24 is disposed around spigot 15 and between ring 22 and cap 16, such that, when assembled, the underside of cap 16 is biased to a position a small distance above the top plate 10.
  • springs 20 it is possible to employ leaf springs to provide the centring action to ring 22 and hence to handle 14.
  • FIG. 6 A further alternative to coil springs 20 is shown in Figs 6, 7 and 8.
  • This employs an elastomeric member 60, which replaces springs 20, and a two part ring 61, 62 which replaces ring 22. Ring parts 61, 62 are pushed together, clamping elastomeric member 60 in the process, and held together by glue or by virtue of being a tight fit one to the other.
  • the remote ends of member 60 are retained in support 63, similar to support 21, by sliding into the four keyways shown in support 63.
  • This alternative centre-biasing method may be preferable to an embodiment employing coil springs since the elastomeric member 60 would provide desirable damping to the motion of the handle 14 and would provide greater reliability. This alternative would also be cheaper to produce in high volume, both in the cost of assembly and in the cost of parts, once the tooling costs of the elastomeric member had been amortized.
  • a printed circuit board (pcb) 30 is attached to support 21 or 63, eg, by screws or rivets.
  • This pcb 30 carries four infra-red detectors 31 arranged with another four infra-red detectors 31a to match the smaller holes 12, 12a in top plate 10.
  • the pcb 30 further carries electronic components (not shown) arranged to process signals received from the detectors 31, 31a.
  • the pcb has a hole 33, similar in shape to hole 11 but somewhat smaller, to allow the end of the spigot 15 to pass through the pcb. Hole 33 need not be as large as hole 11 since it does not need to accommodate spring 24.
  • the pcb has an area around hole 33 clear of any obstruction so that ring 22 may slide when it is laterally deflected away from its neutral position.
  • Infra-red transmitter 34 is electrically connected to pcb 30 by flying leads 35, 36.
  • Pcb 30 carries suitable drive circuitry for this transmitter.
  • the transmitter is inserted into a cavity in the lower end of spigot 15, as shown in Fig. 3. It is retained in this position either by virtue of being a tight fit in the cavity or by a small amount of glue, applied around its edge prior to insertion.
  • a further infra-red detector 37 is retained in a hole 38 in the side of ring 22.
  • This detector is electrically connected to pcb 30 by flying leads 39, 40.
  • hole 38 narrows at its inner end but is nevertheless open to the spigot 15.
  • a groove 41 is cut around the spigot 15 at a level selected to be a small distance above hole 38 when the handle is not in use.
  • infra-red light from transmitter 34 propagates up spigot 15 and is reflected by the conical surface 50 into the circular cap 16, as shown in Fig. 3.
  • the light is again reflected, this time by frusto-conical surface 51, so that it is now directed downwards, through surface 52, towards the upper surface of top plate 10.
  • This arrangement therefore produces a ring of infra-red light on top plate 10, the position of the ring being dependent on the lateral position of the handle 14.
  • surface 52 may be curved to form a lens, as shown, in order to produce a more concentrated ring of light on top plate 10.
  • Surfaces 50, 51 may be silvered to increase the proportion of incident light they reflect, although this has not been found necessary in the present embodiment.
  • the surface may be protected by a suitable coating, not shown. If it were desired to prevent the retention of foreign matter in the region of the finger grip 17, this grip could be replaced by a hemispherical cap covering the cap 16; this would also protect the reflective surfaces 50, 51 from damage.
  • the finger grip 17 is grasped by an operator.
  • the handle is then laterally displaced by the operator in the direction of one of the pairs of holes 12, 12a.
  • the consequent change in the output of a detector 31 is detected by an electronic circuit (not shown) and is signalled to an attached data processing apparatus along cable 42. This signal is then used to move the position of a cursor up, down, left or right, depending on which detector is illuminated, ie, on the direction in which the handle was moved.
  • the cursor may move in single steps each time 12 is illuminated and continuously when 12a is illuminated or, alternatively, it may move slowly but continuously when 12 is illuminated and more rapidly when 12 a is illuminated.
  • the handle is not constrained to move only directly towards any detector from the centre.
  • the handle can move anywhere in its plane as long as the spigot 15 is within the edges of holes 11 and 33. It is therefore possible to illuminate two holes 12 simultaneously by moving the handle in a direction midway between the two holes 12 concerned. This is useful since it provides the ability to move the cursor diagonally on the screen as well as up, down, left or right. It is also possible to illuminate two holes 12a simultaneously, to give accelerated diagonal movement. This is permitted by making the holes 11, 33 approximately square as shown, rather than circular, so that the handle may travel further from the centre when it has to illuminate two holes 12a than when it has to illuminate only one. If it were desired to inhibit simultaneous illumination of two holes to inhibit movement of a cursor at 45 degrees, then it would be necessary to form holes 11, 33 in the shape of a cross or similar, with each limb of the cross pointing towards one pair of holes 12, 12a.
  • This device provides a facility for indicating this acceptance. It is achieved by pressing down on the handle 14 against spring 24. This causes the spigot 15 and the transmitter 34 to drop, while the ring 22 remains in position. This relative movement between spigot 15 and ring 22 causes the groove 41 in the spigot to align with the hole 38 and detector 37 in the ring 22.
  • Transmitter 34 transmits over a wide angle which includes the groove 41.
  • the groove includes an angled surface arranged to reflect infra-red light outwards into hole 38 and thence detector 37.
  • the groove 41 and hole 38 are not aligned so the amount of light entering hole 38 is low. Consequently, the amount of light received by detector 37 increases when the handle is depressed and this increase is detected and signalled to the data processing apparatus whereupon appropriate action is taken as mentioned above.
  • the infra-red transmitter radiates over a very wide angle, such that it transmits light directly to hole 38 when the handle is not depressed, then it may be necessary to reduce the intensity of this directly transmitted light, either by ensuring that the sides of hole 38 absorb infra-red light very efficiently (so that the only light travelling directly down hole 38 reaches the detector 37) or by making the sides of spigot 15 reflective to infra-red light (except at the groove 41), such that infra-red light may only escape from the spigot at groove 41 or into cap 16.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Position Input By Displaying (AREA)

Claims (9)

  1. Dispositif de commande actionné manuellement pour commander la position d'un curseur sur un écran d'affichage comprenant:
    une source de lumière (34);
    un certain nombre de capteurs (31, 31a) sensibles à la lumière de la source; et
    une poignée actionnable manuellement (14) pouvant fonctionner pour faire varier les intensités relatives de la lumière tombant sur les capteurs (31, 31a), la poignée ayant une position neutre et un certain nombre de positions actives, caractérisé en ce que:
    ladite poignée renferme une fenêtre d'émission (52) et comporte un moyen de transmission (15, 16) pour transmettre la lumière depuis la source (34) vers la fenêtre (52);
    le moyen de transmission a la forme d'un champignon, agencé pour recevoir la lumière de la source (34) dans un ergot (15) formant le pied du champignon et pour réfléchir la lumière de façon interne à l'intérieur du moyen de transmission afin que la lumière sorte par ladite fenêtre d'émission;
    de sorte que le déplacement de la poignée modifie la position de la fenêtre (52) par rapport aux capteurs (31, 31a), afin que la position de la poignée puisse être mesurée par interrogation des capteurs.
  2. Dispositif selon la revendication 1 dans lequel le moyen de transmission (15, 16) comporte une surface (50 ou 51) agencée pour réfléchir la lumière à l'intérieur du moyen de transmission au cours de la transmission.
  3. Dispositif selon la revendication 1 ou la revendication 2 dans lequel la série de capteurs comporte quatre capteurs (31), chaque capteur étant monté dans un élément support (10, 21, 30) à un angle différent d'un carré fictif.
  4. Dispositif selon la revendication 3 dans lequel la poignée (14) est montée à translation dans ledit élément support (10, 21, 30) de sorte que la poignée puisse se déplacer selon un mouvement de translation à l'intérieur d'une région prédéterminée qui est suffisamment étendue pour permettre à chaque capteur d'être éclairé et, en outre, qui est suffisamment étendue pour permettre à deux capteurs adjacents d'être éclairés simultanément.
  5. Dispositif selon la revendication 4 dans lequel chaque capteur est associé à un autre capteur (31a), de sorte que, lorsque la poignée (14) est déplacée le long d'un axe depuis la position neutre jusqu'à une position active, un déplacement supplémentaire de la poignée le long du même axe provoque la transmission de la lumière vers l'autre capteur associé (31a).
  6. Dispositif selon la revendication 3, la revendication 4 ou la revendication 5 comportant en outre un moyen de commutation (24, 37, 38, 41) sensible à la pression manuelle exercée sur la poignée dans une direction perpendiculaire au plan dudit carré fictif.
  7. Dispositif selon la revendication 6, dans lequel le moyen de commutation comporte un autre capteur (37) sensible à ladite lumière de ladite source (34) et un moyen (24, 38, 41) sensible à la pression manuelle pour diriger une partie de ladite lumière vers l'autre capteur (37) du moyen de commutation.
  8. Dispositif selon l'une quelconque des revendications 1-6 dans lequel chaque capteur de la série de capteurs (31, 31a) comprend un filtre (18) sur sa région active pour réduire l'intensité du rayonnement ambiant qui atteint le capteur dans une plage de fréquences distincte de celle de la lumière produite par la source de lumière (34).
  9. Dispositif selon l'une quelconque des revendications précédentes dans lequel la lumière est de la lumière infra-rouge.
EP88104342A 1987-06-18 1988-03-18 Dispositif de contrôle à commande manuelle Expired - Lifetime EP0295368B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8714334A GB2205941B (en) 1987-06-18 1987-06-18 Manually-operated control device
GB8714334 1987-06-18

Publications (3)

Publication Number Publication Date
EP0295368A2 EP0295368A2 (fr) 1988-12-21
EP0295368A3 EP0295368A3 (en) 1990-07-11
EP0295368B1 true EP0295368B1 (fr) 1993-06-16

Family

ID=10619174

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88104342A Expired - Lifetime EP0295368B1 (fr) 1987-06-18 1988-03-18 Dispositif de contrôle à commande manuelle

Country Status (5)

Country Link
US (1) US5065146A (fr)
EP (1) EP0295368B1 (fr)
JP (1) JPS63318623A (fr)
DE (1) DE3881763T2 (fr)
GB (1) GB2205941B (fr)

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US8674932B2 (en) 1996-07-05 2014-03-18 Anascape, Ltd. Image controller
US9081426B2 (en) 1992-03-05 2015-07-14 Anascape, Ltd. Image controller

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Also Published As

Publication number Publication date
GB8714334D0 (en) 1987-07-22
US5065146A (en) 1991-11-12
JPH0477335B2 (fr) 1992-12-08
DE3881763T2 (de) 1993-12-23
DE3881763D1 (de) 1993-07-22
JPS63318623A (ja) 1988-12-27
GB2205941B (en) 1991-08-07
GB2205941A (en) 1988-12-21
EP0295368A3 (en) 1990-07-11
EP0295368A2 (fr) 1988-12-21

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